Univariate analysis of poor outcome for 2006–2011 cohort
| Characteristic | Percentage poor outcome n=356 | Percentage good outcome n=3856 | Significance |
| Demographics | |||
| Age group | <0.001 | ||
| <55 | 29.5 | 39.9 | |
| 55–64 | 22.2 | 19.9 | |
| 65–74 | 28.9 | 22.2 | |
| 75+ | 19.4 | 18.0 | |
| Sex (female) | 37.6 | 40.1 | 0.471 |
| Prior to ICU admission | |||
| Community CPR | 0.3 | 1.8 | 0.217 |
| Pre-ICU hospital stay 3+ days | 27.5 | 15.5 | <0.001 |
| At ICU admission | |||
| Unplanned admission | 63.7 | 68.3 | <0.001 |
| ICU type | <0.001 | ||
| Surgical | 29.5 | 17.0 | |
| Medical-surgical | 70.5 | 83.0 | |
| Primary organ system pathology | <0.001 | ||
| Cardiovascular | 9.3 | 16.1 | |
| Genitourinary | 7.3 | 9.1 | |
| Metabolic | 2.0 | 5.5 | |
| Musculoskeletal | 6.5 | 7.4 | |
| Neurological | 2.8 | 7.4 | |
| Other | 2.2 | 1.7 | |
| Respiratory | 17.4 | 16.0 | |
| Gastrointestinal | 52.5 | 36.6 | |
| Admission type | 0.890 | ||
| Medical | 39.3 | 43.2 | |
| Surgical | 60.7 | 56.8 | |
| Urgency of surgery | 0.013 | ||
| No surgery | 39.3 | 43.7 | |
| Elective | 34.3 | 32.1 | |
| Emergency | 26.4 | 24.2 | |
| In-hospital CPR | 2 | 2.4 | 0.034 |
| Any CPR | 2.5 | 4.6 | 0.394 |
| During ICU admission | |||
| ICU length of stay 5+ days | 24.7 | 18.9 | 0.001 |
| Coma or stupor at 24 hours in ICU | 16.3 | 17.0 | <0.001 |
| Composite organ support score ≥10 | 17.7 | 14.5 | 0.001 |
| APACHE II score | 0.002 | ||
| Not recorded | 6.5 | 5.8 | |
| 1–9 | 8.7 | 12.3 | |
| 10–19 | 52.8 | 52.4 | |
| 20–29 | 27 | 25.9 | |
| 30–39 | 4.8 | 3.4 | |
| 40+ | 0.3 | 0.3 | |
| At ICU discharge | |||
| Timeliness of discharge | 0.005 | ||
| Not recorded | 9.0 | 7.1 | |
| Fully ready | 54.2 | 57.7 | |
| Delayed | 30.6 | 31.8 | |
| Early | 6.2 | 3.4 | |
| Care level at ICU discharge | 0.053 | ||
| Not recorded | 9.0 | 6.5 | |
| Level 0 | 0.0 | 0.2 | |
| Level 1 | 18.5 | 22.6 | |
| Level 2 | 58.7 | 55.2 | |
| Level 3 | 13.8 | 15.5 | |
| Dependency at ICU discharge | 0.001 | ||
| None | 9.3 | 7.1 | |
| Minor | 75 | 81.7 | |
| Major | 15.7 | 11.2 |
Composite organ support score derived from summation of levels of ICU organ support during total ICU stay.
Significance by univariate analysis. Where categories exist composite significance for the class is given.
All numbers as percentages.
APACHE II, Acute Physiology and Chronic Health Evaluation II; CPR, cardiopulmonary resuscitation; ICU, intensive care unit.